Infineon Technologies Merus Integrated Audio Ics | New Product BriefJuly 31, 2019 by Mouser Electronics
These use multilevel switching to improve efficiency, power density, and audio performance.
This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.
Infineon Technologies Merus Integrated Audio Ics
Infineon Technologies MERUS low power class D amplifier solutions use multilevel switching to improve efficiency, power density, and audio performance compared to traditional class D amplifiers.
MERUS amplifiers produce outputs using up to 5 voltage levels instead of only 2, and this increased granularity keeps power loss extremely low with almost no switching loss at idle, along with very low THD+N values. Amplifiers are available with 40W or 80W stereo outputs and digital or analog inputs, with digital input versions compliant with HiRes Audio requirements.
MERUS low power class D amplifiers operate from a wide supply voltage and have a comprehensive protection scheme. They also have a filterless topology, eliminating bulky LC output filters for a simpler design and smaller footprint.
- Multi-level output
- 3-level and 5-level modulation
- Idle power dissipation <160mW
- THD+N <0.007%
- 2x40W or 2x80W max peak power
- Digital or analog input
- Digital input versions (MA12040P, MA12070P) comply with HiRes Audio requirements
- Wide supply voltage
- 40W: 4V-18V
- 80W: 4V-26V
- Filterless topology
- Eliminates bulky output filters
- Simpler design, smaller footprint
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